Front Load Dual Sensor
Front Load Dual crystal sensors offer proven reliability and durability and have the best thermal stability of any sensor head on the market. The dual sensor provides a backup crystal and is essential for critical processes where it is desirable to have the second crystal in the vacuum chamber.
The front load design allows for easy insertion of the crystal holder in applications lacking sufficient room for side insertion. Assembled mechanically rather than soldered, parts can be replaced conveniently in the field, if necessary. Sensors can be ordered individually or in a sensor/feedthrough combination that can be either welded or assembled with compression fittings.
FEATURES
- Dual crystals
- Crystal shutter
- Front load crystal holder
- Easy installation
- Available with: 2.54 cm (1 inch) bolt feedthrough and CF40 feedthrough
- Adjustable length if ordered with compression fittings
- No brazing required if ordered with compression fittings or welded to feedthrough
- Sensor/feedthrough combinations available welded to customer specified lengths
Specifications
| Maximum operating isothermal environment temperature with minimum water flow | 400 ° C |
| Crystal exchange | Front-loading, self-contained package for ease of exchange. Shutter flips up to ease access to the holders. |
| Water tubes | S-304, 0.125 in. (3.175 mm) OD x 0.015 in. (0.381 mm) Wall thickness seamless stainless steel tubing |
| Feedthrough Specifications 1 in. bolt and Ultra-Torr (compression fitting) terminations: | |
| Materials | 304 stainless steel, Teflon, ceramic, beryllium nickel, VITON® |
| Temperature | Operational environment to 300ºC with water cooling or 165° C without |
| Mounting | 1.015 in. ±0.010 in. diameter aperture |
Accessories
| Name | Description |
| QCM Sensor Feedthroughs | QCM Sensor Feedthroughs |
Consumables
| Name | Description |
| Quartz Monitor Crystals | Quartz Monitor Crystals |
Spare parts
| Part Number | Description |
| 007-007 | Retainer spring (for crystal holder) |
| 007-023 | Ceramic Retainer |
| 080-018 | Set screw (for female coax) |
| 082-044 | Teflon screw (for leaf spring) |
| 750-115-P4 | Coupling (installs onto bellows assembly) |
| 750-169-P2 | Bellows assembly (coupling not included) |
| 750-171-P1 | Finger spring contact |
| 750-172-G1 | Crystal holder (includes retainer spring) |
| 750-174-P2 | Female coax |
| 750-175-P1 | Insulator (underneath leaf spring) |
| 008-007 | CRYSTAL SNATCHER |
| 750-188-P3 | Leaf Spring |
| 750-210-G1 | Shutter module (bellows assembly, shaft assembly, and shutter assembly) |
| 750-215-G1 | Shaft assembly (part of shutter module) |
| 750-216-G1 | Shutter assembly (part of shutter module) |
| In-vacuum cables | |
| 321-039-G12 | In-vacuum cable, 15.2 cm (6 in.) |
| 007-252 | In-vacuum cable, 30.5 cm (12 in.) |
| 321-039-G11 | In-vacuum cable, 61.0 cm (24 in.) |
| 007-044 | In-vacuum cable, 78.1 cm (30.75 in.) |
| 007-059 | In-vacuum cable, 91.4 cm (36 in.) |
| 007-061 | In-vacuum cable, 121.9 cm (48 in.) – Requires ModeLock controller |
| 321-039-G13 | In-Vacuum Cable, 154.2 cm (60 in.) – Requires ModeLock controller |
| 321-039-G14 | In-vacuum cable, 182.9 cm (72 in.) – Requires ModeLock controller |
| 321-039-G15 | In-vacuum cable, 3.5 m (137.8 in.) – Requires ModeLock controller and 4 m XIU |
| 321-039-G16 | In-vacuum cable, 4 m (157.5 in.) – Requires ModeLock controller and 4 m XIU |
Part numbers
